canna: building the documentation fails during image conversion

[mojca (Mojca Miklavec)]

After removig pTeX (#41980) I had to remove that port as a dependency of canna. For some reason building the documentation now fails:

Output written on canna.dvi (223 pages, 808836 bytes).
Transcript written on canna.log.
dvipdfmx canna.dvi
canna.dvi -> canna.pdf
[1][2][3][4][5][6][7][8][9][10][11][12][13][14][15Error: /typecheck in /findfont
Operand stack:
   --dict:17/17(ro)(G)--   --dict:17/17(ro)(G)--   --dict:17/17(ro)(G)--   --dict:17/17(ro)(G)--   --dict:17/17(ro)(G)--   --dict:17/17(ro)(G)--   --dict:17/17(ro)(G)--   Ryumin-Light-H
Execution stack:
   %interp_exit   .runexec2   --nostringval--   --nostringval--   --nostringval--   2   %stopped_push   --nostringval--   --nostringval--   --nostringval--   false   1   %stopped_push   1967   1   3   %oparray_pop   1966   1   3   %oparray_pop   --nostringval--   1950   1   3   %oparray_pop   1836   1   3   %oparray_pop   --nostringval--   %errorexec_pop   .runexec2   --nostringval--   --nostringval--   --nostringval--   2   %stopped_push   --nostringval--   1919   8   4   %oparray_pop
Dictionary stack:
   --dict:1195/1684(ro)(G)--   --dict:0/20(G)--   --dict:84/200(L)--   --dict:65/100(L)--
Current allocation mode is local
Last OS error: Invalid argument
Current file position is 4177
GPL Ghostscript 9.16: Unrecoverable error, exit code 1

dvipdfmx:warning: Filtering file via command -->gs -q -dNOPAUSE -dBATCH -dEPSCrop -sDEVICE=pdfwrite -dCompatibilityLevel=1.5 -dAutoFilterGrayImages=false -dGrayImageFilter=/FlateEncode -dAutoFilterColorImages=false -dColorImageFilter=/FlateEncode -sOutputFile='/path/to/canna/work/.tmp/dvipdfm-x.1b16c3fc4e19fe7baef503fa086f8576' '../zukei/modedisp.eps' -c quit<-- failed.
dvipdfmx:warning: Image format conversion for "../zukei/modedisp.eps" failed...
dvipdfmx:fatal: pdf_ref_obj(): passed invalid object.

Output file removed.
make: *** [canna.pdf] Error 1
Command failed: cd /path/to/canna/work/Canna37p3/doc/man/guide/tex && xmkmf && make canna.pdf
Exit code: 2